I treat this as tentatively good news.
I don't imagine the transfer can make anything worse in the near term. Nokia is imploding and turning MSEvil, and I was a bit concerned about the status of qt because of it. I'm relieved to hear that at least it's now in the hands of a stable(?) company that appreciates its value.
Here's a link to a semi-official quote. It looks like they intend to keep it business-as-usual for now, at least.
Worse comes to worst, Digia may eventually try to disrupt or eliminate its development support for the FOSS Qt Project and take it fully proprietary, at which point some open source group will almost certainly fork the code. That may slow it down, but I doubt it will kill it.